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<pre><span class="sourceLineNo">001</span>package calibration_demos_more;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>import java.awt.Color;<a name="line.3"></a>
<span class="sourceLineNo">004</span><a name="line.4"></a>
<span class="sourceLineNo">005</span>import ij.IJ;<a name="line.5"></a>
<span class="sourceLineNo">006</span>import ij.ImagePlus;<a name="line.6"></a>
<span class="sourceLineNo">007</span>import ij.ImageStack;<a name="line.7"></a>
<span class="sourceLineNo">008</span>import ij.plugin.PlugIn;<a name="line.8"></a>
<span class="sourceLineNo">009</span>import ij.process.ImageProcessor;<a name="line.9"></a>
<span class="sourceLineNo">010</span>import imagingbook.calibration.zhang.Camera;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import imagingbook.calibration.zhang.ViewTransform;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import imagingbook.calibration.zhang.testdata.ZhangData;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import imagingbook.lib.ij.IjLogStream;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import imagingbook.lib.settings.PrintPrecision;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import imagingbook.lib.util.ResourceUtils;<a name="line.15"></a>
<span class="sourceLineNo">016</span><a name="line.16"></a>
<span class="sourceLineNo">017</span><a name="line.17"></a>
<span class="sourceLineNo">018</span>/**<a name="line.18"></a>
<span class="sourceLineNo">019</span> * This plugin projects and draws the projected X/Y/Z coordinate axes<a name="line.19"></a>
<span class="sourceLineNo">020</span> * for each of the given camera views.<a name="line.20"></a>
<span class="sourceLineNo">021</span> * <a name="line.21"></a>
<span class="sourceLineNo">022</span> * @author W. Burger<a name="line.22"></a>
<span class="sourceLineNo">023</span> * @version 2017-05-30<a name="line.23"></a>
<span class="sourceLineNo">024</span> */<a name="line.24"></a>
<span class="sourceLineNo">025</span>public class Demo_Draw_3D_Axes implements PlugIn {<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>        static Class&lt;?&gt; resourceRootClass = ZhangData.class;<a name="line.27"></a>
<span class="sourceLineNo">028</span>        static String resourceDir = "resources/";<a name="line.28"></a>
<span class="sourceLineNo">029</span>        static String resourceName = "CalibImageStack.tif";<a name="line.29"></a>
<span class="sourceLineNo">030</span><a name="line.30"></a>
<span class="sourceLineNo">031</span>        static Color BackGroundColor = Color.white;<a name="line.31"></a>
<span class="sourceLineNo">032</span>        static Color LineColor = Color.magenta;<a name="line.32"></a>
<span class="sourceLineNo">033</span>        static Color xColor = Color.red;<a name="line.33"></a>
<span class="sourceLineNo">034</span>        static Color yColor = Color.green;<a name="line.34"></a>
<span class="sourceLineNo">035</span>        static Color zColor = Color.blue;<a name="line.35"></a>
<span class="sourceLineNo">036</span><a name="line.36"></a>
<span class="sourceLineNo">037</span>        static double axisLength = 5;   <a name="line.37"></a>
<span class="sourceLineNo">038</span>        static boolean BeVerbose = false;<a name="line.38"></a>
<span class="sourceLineNo">039</span><a name="line.39"></a>
<span class="sourceLineNo">040</span>        static {<a name="line.40"></a>
<span class="sourceLineNo">041</span>                IjLogStream.redirectSystem();<a name="line.41"></a>
<span class="sourceLineNo">042</span>                PrintPrecision.set(6);<a name="line.42"></a>
<span class="sourceLineNo">043</span>        }<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span>        public void run(String arg0) {<a name="line.45"></a>
<span class="sourceLineNo">046</span>                // create a 3D model:<a name="line.46"></a>
<span class="sourceLineNo">047</span><a name="line.47"></a>
<span class="sourceLineNo">048</span>                double[] p0 = {0.0, 0.0, 0.0}; // 3D origin<a name="line.48"></a>
<span class="sourceLineNo">049</span>                double[] p1 = {axisLength, 0.0, 0.0};<a name="line.49"></a>
<span class="sourceLineNo">050</span>                double[] p2 = {0.0, axisLength, 0.0};<a name="line.50"></a>
<span class="sourceLineNo">051</span>                double[] p3 = {0.0, 0.0, axisLength};<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>                // open the test image (stack):<a name="line.53"></a>
<span class="sourceLineNo">054</span>                ImagePlus testIm = ResourceUtils.openImageFromResource(resourceRootClass, resourceDir, resourceName);<a name="line.54"></a>
<span class="sourceLineNo">055</span>                if (testIm == null) {<a name="line.55"></a>
<span class="sourceLineNo">056</span>                        IJ.error("Could not open calibration images!");<a name="line.56"></a>
<span class="sourceLineNo">057</span>                        return;<a name="line.57"></a>
<span class="sourceLineNo">058</span>                }<a name="line.58"></a>
<span class="sourceLineNo">059</span>                testIm.show();<a name="line.59"></a>
<span class="sourceLineNo">060</span><a name="line.60"></a>
<span class="sourceLineNo">061</span>                // get the camera intrinsics (typically by calibration):<a name="line.61"></a>
<span class="sourceLineNo">062</span>                Camera camera = ZhangData.getCameraIntrinsics();<a name="line.62"></a>
<span class="sourceLineNo">063</span><a name="line.63"></a>
<span class="sourceLineNo">064</span>                // get all view parameters (extrinsics):<a name="line.64"></a>
<span class="sourceLineNo">065</span>                ViewTransform[] views = ZhangData.getAllViewTransforms();<a name="line.65"></a>
<span class="sourceLineNo">066</span>                int M = views.length;<a name="line.66"></a>
<span class="sourceLineNo">067</span><a name="line.67"></a>
<span class="sourceLineNo">068</span>                // project and draw the model into the views:<a name="line.68"></a>
<span class="sourceLineNo">069</span>                ImageStack stack = testIm.getStack();<a name="line.69"></a>
<span class="sourceLineNo">070</span>                for (int i = 0; i &lt; M; i++) {<a name="line.70"></a>
<span class="sourceLineNo">071</span>                        ImageProcessor ip = stack.getProcessor(i + 1);<a name="line.71"></a>
<span class="sourceLineNo">072</span>                        ip.setColor(xColor);<a name="line.72"></a>
<span class="sourceLineNo">073</span>                        drawProjectedSegment(ip, camera, views[i], p0, p1);<a name="line.73"></a>
<span class="sourceLineNo">074</span>                        ip.setColor(yColor);<a name="line.74"></a>
<span class="sourceLineNo">075</span>                        drawProjectedSegment(ip, camera, views[i], p0, p2);<a name="line.75"></a>
<span class="sourceLineNo">076</span>                        ip.setColor(zColor);<a name="line.76"></a>
<span class="sourceLineNo">077</span>                        drawProjectedSegment(ip, camera, views[i], p0, p3);<a name="line.77"></a>
<span class="sourceLineNo">078</span>                }<a name="line.78"></a>
<span class="sourceLineNo">079</span>                testIm.updateAndDraw();<a name="line.79"></a>
<span class="sourceLineNo">080</span>        }<a name="line.80"></a>
<span class="sourceLineNo">081</span><a name="line.81"></a>
<span class="sourceLineNo">082</span>        private void drawProjectedSegment(ImageProcessor ip, Camera cam, ViewTransform V, double[] P1, double[] P2) {<a name="line.82"></a>
<span class="sourceLineNo">083</span>                double[] u1 = cam.project(V, P1);<a name="line.83"></a>
<span class="sourceLineNo">084</span>                int u1x = (int) Math.round(u1[0]);<a name="line.84"></a>
<span class="sourceLineNo">085</span>                int u1y = (int) Math.round(u1[1]);<a name="line.85"></a>
<span class="sourceLineNo">086</span>                double[] u2 = cam.project(V, P2);<a name="line.86"></a>
<span class="sourceLineNo">087</span>                int u2x = (int) Math.round(u2[0]);<a name="line.87"></a>
<span class="sourceLineNo">088</span>                int u2y = (int) Math.round(u2[1]);<a name="line.88"></a>
<span class="sourceLineNo">089</span>                ip.drawLine(u1x, u1y, u2x, u2y);<a name="line.89"></a>
<span class="sourceLineNo">090</span>        }<a name="line.90"></a>
<span class="sourceLineNo">091</span><a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span>}<a name="line.93"></a>




























































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